यदि \(A\subseteq B\subseteq U\) है, तो निम्न में से कौन सा कथन हमेशा सही है?
If \(A\subseteq B\subseteq U\), which of the following is always true?
Explanation opens after your attempt
A. \(B^c\subseteq A^c\)
Concept
The order of inclusion reverses after taking complements. Thus \(A\subseteq B\) gives \(B^c\subseteq A^c\).
Why this answer is correct
The correct answer is A. \(B^c\subseteq A^c\). The order of inclusion reverses after taking complements. Thus \(A\subseteq B\) gives \(B^c\subseteq A^c\).
Exam Tip
पूरक लेने पर समावेशन का क्रम उलट जाता है। इसलिए \(A\subseteq B\) से \(B^c\subseteq A^c\) मिलता है।
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